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(typically fsck_ffs) to register that it wishes to use FFS specific sysctl's to update the filesystem. This ensures that two checkers cannot run on a given filesystem at the same time and that no other process accidentally or maliciously uses the filesystem updating sysctls inappropriately. This functionality is needed by the journaling soft-updates recovery code.
153 lines
6.1 KiB
C
153 lines
6.1 KiB
C
/*-
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* Copyright (c) 1982, 1986, 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ufsmount.h 8.6 (Berkeley) 3/30/95
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* $FreeBSD$
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*/
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#ifndef _UFS_UFS_UFSMOUNT_H_
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#define _UFS_UFS_UFSMOUNT_H_
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#include <sys/buf.h> /* XXX For struct workhead. */
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/*
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* Arguments to mount UFS-based filesystems
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*/
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struct ufs_args {
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char *fspec; /* block special device to mount */
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struct oexport_args export; /* network export information */
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};
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#ifdef _KERNEL
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#ifdef MALLOC_DECLARE
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MALLOC_DECLARE(M_UFSMNT);
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#endif
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struct buf;
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struct inode;
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struct nameidata;
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struct timeval;
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struct ucred;
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struct uio;
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struct vnode;
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struct ufs_extattr_per_mount;
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struct jblocks;
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struct inodedep;
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TAILQ_HEAD(inodedeplst, inodedep);
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LIST_HEAD(bmsafemaphd, bmsafemap);
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/* This structure describes the UFS specific mount structure data. */
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struct ufsmount {
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struct mount *um_mountp; /* filesystem vfs structure */
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struct cdev *um_dev; /* device mounted */
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struct g_consumer *um_cp;
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struct bufobj *um_bo; /* Buffer cache object */
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struct vnode *um_devvp; /* block device mounted vnode */
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u_long um_fstype; /* type of filesystem */
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struct fs *um_fs; /* pointer to superblock */
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struct ufs_extattr_per_mount um_extattr; /* extended attrs */
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u_long um_nindir; /* indirect ptrs per block */
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u_long um_bptrtodb; /* indir ptr to disk block */
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u_long um_seqinc; /* inc between seq blocks */
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struct mtx um_lock; /* Protects ufsmount & fs */
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pid_t um_fsckpid; /* PID permitted fsck sysctls */
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long um_numindirdeps; /* outstanding indirdeps */
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struct workhead softdep_workitem_pending; /* softdep work queue */
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struct worklist *softdep_worklist_tail; /* Tail pointer for above */
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struct workhead softdep_journal_pending; /* journal work queue */
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struct worklist *softdep_journal_tail; /* Tail pointer for above */
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struct jblocks *softdep_jblocks; /* Journal block information */
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struct inodedeplst softdep_unlinked; /* Unlinked inodes */
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struct bmsafemaphd softdep_dirtycg; /* Dirty CGs */
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int softdep_on_journal; /* Items on the journal list */
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int softdep_on_worklist; /* Items on the worklist */
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int softdep_deps; /* Total dependency count */
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int softdep_accdeps; /* accumulated dep count */
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int softdep_req; /* Wakeup when deps hits 0. */
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struct vnode *um_quotas[MAXQUOTAS]; /* pointer to quota files */
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struct ucred *um_cred[MAXQUOTAS]; /* quota file access cred */
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time_t um_btime[MAXQUOTAS]; /* block quota time limit */
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time_t um_itime[MAXQUOTAS]; /* inode quota time limit */
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char um_qflags[MAXQUOTAS]; /* quota specific flags */
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int64_t um_savedmaxfilesize; /* XXX - limit maxfilesize */
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int um_candelete; /* devvp supports TRIM */
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int (*um_balloc)(struct vnode *, off_t, int, struct ucred *, int, struct buf **);
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int (*um_blkatoff)(struct vnode *, off_t, char **, struct buf **);
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int (*um_truncate)(struct vnode *, off_t, int, struct ucred *, struct thread *);
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int (*um_update)(struct vnode *, int);
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int (*um_valloc)(struct vnode *, int, struct ucred *, struct vnode **);
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int (*um_vfree)(struct vnode *, ino_t, int);
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void (*um_ifree)(struct ufsmount *, struct inode *);
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int (*um_rdonly)(struct inode *);
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void (*um_snapgone)(struct inode *);
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};
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#define UFS_BALLOC(aa, bb, cc, dd, ee, ff) VFSTOUFS((aa)->v_mount)->um_balloc(aa, bb, cc, dd, ee, ff)
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#define UFS_BLKATOFF(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_blkatoff(aa, bb, cc, dd)
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#define UFS_TRUNCATE(aa, bb, cc, dd, ee) VFSTOUFS((aa)->v_mount)->um_truncate(aa, bb, cc, dd, ee)
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#define UFS_UPDATE(aa, bb) VFSTOUFS((aa)->v_mount)->um_update(aa, bb)
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#define UFS_VALLOC(aa, bb, cc, dd) VFSTOUFS((aa)->v_mount)->um_valloc(aa, bb, cc, dd)
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#define UFS_VFREE(aa, bb, cc) VFSTOUFS((aa)->v_mount)->um_vfree(aa, bb, cc)
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#define UFS_IFREE(aa, bb) ((aa)->um_ifree(aa, bb))
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#define UFS_RDONLY(aa) ((aa)->i_ump->um_rdonly(aa))
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#define UFS_SNAPGONE(aa) ((aa)->i_ump->um_snapgone(aa))
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#define UFS_LOCK(aa) mtx_lock(&(aa)->um_lock)
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#define UFS_UNLOCK(aa) mtx_unlock(&(aa)->um_lock)
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#define UFS_MTX(aa) (&(aa)->um_lock)
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/*
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* Filesystem types
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*/
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#define UFS1 1
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#define UFS2 2
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/*
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* Flags describing the state of quotas.
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*/
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#define QTF_OPENING 0x01 /* Q_QUOTAON in progress */
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#define QTF_CLOSING 0x02 /* Q_QUOTAOFF in progress */
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#define QTF_64BIT 0x04 /* 64-bit quota file */
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/* Convert mount ptr to ufsmount ptr. */
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#define VFSTOUFS(mp) ((struct ufsmount *)((mp)->mnt_data))
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#define UFSTOVFS(ump) (ump)->um_mountp
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/*
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* Macros to access filesystem parameters in the ufsmount structure.
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* Used by ufs_bmap.
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*/
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#define MNINDIR(ump) ((ump)->um_nindir)
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#define blkptrtodb(ump, b) ((b) << (ump)->um_bptrtodb)
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#define is_sequential(ump, a, b) ((b) == (a) + ump->um_seqinc)
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#endif /* _KERNEL */
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#endif
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